[Noise] Hardware encryption devices?

Anyone used any LAN encryption devices (ethernet or fast ethernet speed?) Something that could do IP AH off the back of an Ultrasparc would be ideal. Proprietary packet formats are ok, if they tunnel in IP. Needs to use DES, IDEA, or some other well known cipher. Manual key exchange is ok for this app. Adam -- "It is seldom that liberty of any kind is lost all at once." -Hume